Results 31 to 40 of about 99,621 (296)

Imaging permafrost [PDF]

open access: yesProceedings of the National Academy of Sciences, 2013
Last October, when Susan Hubbard and her team pulled sleds full of sensitive sensors across the snow near the northernmost point in Alaska, temperatures hovered in the single digits and low teens (e.g., 8–15 °F). Foremost in the researchers’ minds, aside from collecting data on the frozen ground beneath their feet, were two things: keep an eye out for ...
openaire   +2 more sources

Rock glaciers in the Ulakhan-Chistay ridge (axial part of the Chersky mountain range)

open access: yesЛëд и снег, 2019
The Ulakhan-Chistay Ridge is interesting by the fact that one of the most extensive mountain glaciations in northeast Russia is located here. In addition, there are widespread specific glacial-cryogenic formations  – stone glaciers related to glacial and
V. M. Lytkin   +2 more
doaj   +1 more source

Syngenetic sand veins and anti-syngenetic sand wedges, Tuktoyaktuk Coastlands, western Arctic Canada [PDF]

open access: yes, 2007
Sand-sheet deposits of full-glacial age in the Tuktoyaktuk Coastlands, western Arctic Canada, contain syngenetic sand veins 1-21 cm wide and sometimes exceeding 9 m in height.
Bateman   +57 more
core   +1 more source

Estimation of subsurface porosities and thermal conductivities of polygonal tundra by coupled inversion of electrical resistivity, temperature, and moisture content data [PDF]

open access: yes, 2020
Studies indicate greenhouse gas emissions following permafrost thaw will amplify current rates of atmospheric warming, a process referred to as the permafrost carbon feedback.
Atchley, AL   +7 more
core   +2 more sources

Construction on Permafrost

open access: yesCanadian Geotechnical Journal, 1971
Permafrost, or perennially frozen ground, occurs widely throughout the northern half of Canada. Experience has shown that special design and construction techniques are required for building on permafrost in order to avoid disturbing the delicate thermal balance that preserves the frozen ground.
Crawford, C. B., Johnston, G. H.
openaire   +4 more sources

The Monterey Event and the Paleocene‐Eocene Thermal Maximum

open access: yesGeophysical Monograph Series, Page 401-416., 2021

Exploring the links between Large Igneous Provinces and dramatic environmental impact

An emerging consensus suggests that Large Igneous Provinces (LIPs) and Silicic LIPs (SLIPs) are a significant driver of dramatic global environmental and biological changes, including mass extinctions.
Tali L. Babila, Gavin L. Foster
wiley  

+2 more sources

Permafrost temperature and active-layer thickness of Yakutia with 0.5-degree spatial resolution for model evaluation [PDF]

open access: yesEarth System Science Data, 2013
Based on the map of landscapes and permafrost conditions in Yakutia (Merzlotno-landshaftnaya karta Yakutskoi0 ASSR, Gosgeodeziya SSSR, 1991), rasterized maps of permafrost temperature and active-layer thickness of Yakutia, East Siberia were derived.
C. Beer, A. N. Fedorov, Y. Torgovkin
doaj   +1 more source

The study of the ground freezing method using natural cold to protect the foundation pit from groundwater inflow

open access: yesИнженерно-строительный журнал, 2015
When the bottom of the foundation pit is below the groundwater level, groundwater drawdown is required; as a rule, it is extremely expensive. In order to reduce water drawdown costs in areas with consistently low air temperatures we suggest to excavate ...
S.A. Guly
doaj   +1 more source

Mapping Mountain Permafrost Landscapes in Siberia Using Landsat Thermal Imagery

open access: yesGeosciences, 2018
Intensive development of South Yakutia, a mountainous area in the Russian sporadic permafrost zone, must be founded on knowledge about regional permafrost conditions. New permafrost maps for mountainous areas in South Yakutia (the Elkon Mountains and the
Svetlana V. Kalinicheva   +2 more
doaj   +1 more source

The permafrost carbon inventory on the Tibetan Plateau : a new evaluation using deep sediment cores [PDF]

open access: yes, 2016
Acknowledgements We are grateful for Dr. Jens Strauss and the other two anonymous reviewers for their insightful comments on an earlier version of this MS, and appreciate members of the IBCAS Sampling Campaign Teams for their assistance in field ...
Brown   +66 more
core   +2 more sources

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